// *************************************************************************** // *************************************************************************** // Copyright 2011(c) Analog Devices, Inc. // // All rights reserved. // // Redistribution and use in source and binary forms, with or without modification, // are permitted provided that the following conditions are met: // - Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // - Redistributions in binary form must reproduce the above copyright // notice, this list of conditions and the following disclaimer in // the documentation and/or other materials provided with the // distribution. // - Neither the name of Analog Devices, Inc. nor the names of its // contributors may be used to endorse or promote products derived // from this software without specific prior written permission. // - The use of this software may or may not infringe the patent rights // of one or more patent holders. This license does not release you // from the requirement that you obtain separate licenses from these // patent holders to use this software. // - Use of the software either in source or binary form, must be run // on or directly connected to an Analog Devices Inc. component. // // THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, // INCLUDING, BUT NOT LIMITED TO, NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A // PARTICULAR PURPOSE ARE DISCLAIMED. // // IN NO EVENT SHALL ANALOG DEVICES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, INTELLECTUAL PROPERTY // RIGHTS, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR // BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, // STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF // THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. // *************************************************************************** // *************************************************************************** // *************************************************************************** // *************************************************************************** // PN monitors `timescale 1ns/100ps module axi_ad9361_rx_pnmon ( // adc interface adc_clk, adc_valid, adc_data_i, adc_data_q, // pn out of sync and error adc_pnseq_sel, adc_pn_oos, adc_pn_err); // parameters parameter IQSEL = 0; parameter PRBS_SEL = 0; localparam PRBS_P09 = 0; localparam PRBS_P11 = 1; localparam PRBS_P15 = 2; localparam PRBS_P20 = 3; // adc interface input adc_clk; input adc_valid; input [11:0] adc_data_i; input [11:0] adc_data_q; // pn out of sync and error input [ 3:0] adc_pnseq_sel; output adc_pn_oos; output adc_pn_err; // internal registers reg adc_pn0_valid = 'd0; reg [15:0] adc_pn0_data = 'd0; reg adc_pn0_valid_in = 'd0; reg [15:0] adc_pn0_data_in = 'd0; reg [15:0] adc_pn0_data_pn = 'd0; reg adc_pn1_valid_t = 'd0; reg [11:0] adc_pn1_data_d = 'd0; reg adc_pn1_valid_in = 'd0; reg [23:0] adc_pn1_data_in = 'd0; reg [23:0] adc_pn1_data_pn = 'd0; reg adc_pn_valid_in = 'd0; reg [23:0] adc_pn_data_in = 'd0; reg [23:0] adc_pn_data_pn = 'd0; // internal signals wire [11:0] adc_pn0_data_i_s; wire [11:0] adc_pn0_data_q_s; wire [11:0] adc_pn0_data_q_rev_s; wire [15:0] adc_pn0_data_s; wire adc_pn0_iq_match_s; wire [15:0] adc_pn0_data_pn_s; wire adc_pn1_valid_s; wire [23:0] adc_pn1_data_pn_s; // bit reversal function function [11:0] brfn; input [11:0] din; reg [11:0] dout; begin dout[11] = din[ 0]; dout[10] = din[ 1]; dout[ 9] = din[ 2]; dout[ 8] = din[ 3]; dout[ 7] = din[ 4]; dout[ 6] = din[ 5]; dout[ 5] = din[ 6]; dout[ 4] = din[ 7]; dout[ 3] = din[ 8]; dout[ 2] = din[ 9]; dout[ 1] = din[10]; dout[ 0] = din[11]; brfn = dout; end endfunction // device-specific prbs function function [15:0] pn0fn; input [15:0] din; reg [15:0] dout; begin dout = {din[14:0], ((^din[15:4]) ^ (^din[2:1]))}; pn0fn = dout; end endfunction // standard prbs functions function [23:0] pn1fn; input [23:0] din; reg [23:0] dout; begin case (PRBS_SEL) PRBS_P09: begin dout[23] = din[ 8] ^ din[ 4]; dout[22] = din[ 7] ^ din[ 3]; dout[21] = din[ 6] ^ din[ 2]; dout[20] = din[ 5] ^ din[ 1]; dout[19] = din[ 4] ^ din[ 0]; dout[18] = din[ 3] ^ din[ 8] ^ din[ 4]; dout[17] = din[ 2] ^ din[ 7] ^ din[ 3]; dout[16] = din[ 1] ^ din[ 6] ^ din[ 2]; dout[15] = din[ 0] ^ din[ 5] ^ din[ 1]; dout[14] = din[ 8] ^ din[ 0]; dout[13] = din[ 7] ^ din[ 8] ^ din[ 4]; dout[12] = din[ 6] ^ din[ 7] ^ din[ 3]; dout[11] = din[ 5] ^ din[ 6] ^ din[ 2]; dout[10] = din[ 4] ^ din[ 5] ^ din[ 1]; dout[ 9] = din[ 3] ^ din[ 4] ^ din[ 0]; dout[ 8] = din[ 2] ^ din[ 3] ^ din[ 8] ^ din[ 4]; dout[ 7] = din[ 1] ^ din[ 2] ^ din[ 7] ^ din[ 3]; dout[ 6] = din[ 0] ^ din[ 1] ^ din[ 6] ^ din[ 2]; dout[ 5] = din[ 8] ^ din[ 0] ^ din[ 4] ^ din[ 5] ^ din[ 1]; dout[ 4] = din[ 7] ^ din[ 8] ^ din[ 3] ^ din[ 0]; dout[ 3] = din[ 6] ^ din[ 7] ^ din[ 2] ^ din[ 8] ^ din[ 4]; dout[ 2] = din[ 5] ^ din[ 6] ^ din[ 1] ^ din[ 7] ^ din[ 3]; dout[ 1] = din[ 4] ^ din[ 5] ^ din[ 0] ^ din[ 6] ^ din[ 2]; dout[ 0] = din[ 3] ^ din[ 8] ^ din[ 5] ^ din[ 1]; end PRBS_P11: begin dout[23] = din[10] ^ din[ 8]; dout[22] = din[ 9] ^ din[ 7]; dout[21] = din[ 8] ^ din[ 6]; dout[20] = din[ 7] ^ din[ 5]; dout[19] = din[ 6] ^ din[ 4]; dout[18] = din[ 5] ^ din[ 3]; dout[17] = din[ 4] ^ din[ 2]; dout[16] = din[ 3] ^ din[ 1]; dout[15] = din[ 2] ^ din[ 0]; dout[14] = din[ 1] ^ din[10] ^ din[ 8]; dout[13] = din[ 0] ^ din[ 9] ^ din[ 7]; dout[12] = din[10] ^ din[ 6]; dout[11] = din[ 9] ^ din[ 5]; dout[10] = din[ 8] ^ din[ 4]; dout[ 9] = din[ 7] ^ din[ 3]; dout[ 8] = din[ 6] ^ din[ 2]; dout[ 7] = din[ 5] ^ din[ 1]; dout[ 6] = din[ 4] ^ din[ 0]; dout[ 5] = din[ 3] ^ din[10] ^ din[ 8]; dout[ 4] = din[ 2] ^ din[ 9] ^ din[ 7]; dout[ 3] = din[ 1] ^ din[ 8] ^ din[ 6]; dout[ 2] = din[ 0] ^ din[ 7] ^ din[ 5]; dout[ 1] = din[10] ^ din[ 6] ^ din[ 8] ^ din[ 4]; dout[ 0] = din[ 9] ^ din[ 5] ^ din[ 7] ^ din[ 3]; end PRBS_P15: begin dout[23] = din[14] ^ din[13]; dout[22] = din[13] ^ din[12]; dout[21] = din[12] ^ din[11]; dout[20] = din[11] ^ din[10]; dout[19] = din[10] ^ din[ 9]; dout[18] = din[ 9] ^ din[ 8]; dout[17] = din[ 8] ^ din[ 7]; dout[16] = din[ 7] ^ din[ 6]; dout[15] = din[ 6] ^ din[ 5]; dout[14] = din[ 5] ^ din[ 4]; dout[13] = din[ 4] ^ din[ 3]; dout[12] = din[ 3] ^ din[ 2]; dout[11] = din[ 2] ^ din[ 1]; dout[10] = din[ 1] ^ din[ 0]; dout[ 9] = din[ 0] ^ din[14] ^ din[13]; dout[ 8] = din[14] ^ din[12]; dout[ 7] = din[13] ^ din[11]; dout[ 6] = din[12] ^ din[10]; dout[ 5] = din[11] ^ din[ 9]; dout[ 4] = din[10] ^ din[ 8]; dout[ 3] = din[ 9] ^ din[ 7]; dout[ 2] = din[ 8] ^ din[ 6]; dout[ 1] = din[ 7] ^ din[ 5]; dout[ 0] = din[ 6] ^ din[ 4]; end PRBS_P20: begin dout[23] = din[19] ^ din[ 2]; dout[22] = din[18] ^ din[ 1]; dout[21] = din[17] ^ din[ 0]; dout[20] = din[16] ^ din[19] ^ din[ 2]; dout[19] = din[15] ^ din[18] ^ din[ 1]; dout[18] = din[14] ^ din[17] ^ din[ 0]; dout[17] = din[13] ^ din[16] ^ din[19] ^ din[ 2]; dout[16] = din[12] ^ din[15] ^ din[18] ^ din[ 1]; dout[15] = din[11] ^ din[14] ^ din[17] ^ din[ 0]; dout[14] = din[10] ^ din[13] ^ din[16] ^ din[19] ^ din[ 2]; dout[13] = din[ 9] ^ din[12] ^ din[15] ^ din[18] ^ din[ 1]; dout[12] = din[ 8] ^ din[11] ^ din[14] ^ din[17] ^ din[ 0]; dout[11] = din[ 7] ^ din[10] ^ din[13] ^ din[16] ^ din[19] ^ din[ 2]; dout[10] = din[ 6] ^ din[ 9] ^ din[12] ^ din[15] ^ din[18] ^ din[ 1]; dout[ 9] = din[ 5] ^ din[ 8] ^ din[11] ^ din[14] ^ din[17] ^ din[ 0]; dout[ 8] = din[ 4] ^ din[ 7] ^ din[10] ^ din[13] ^ din[16] ^ din[19] ^ din[ 2]; dout[ 7] = din[ 3] ^ din[ 6] ^ din[ 9] ^ din[12] ^ din[15] ^ din[18] ^ din[ 1]; dout[ 6] = din[ 2] ^ din[ 5] ^ din[ 8] ^ din[11] ^ din[14] ^ din[17] ^ din[ 0]; dout[ 5] = din[ 1] ^ din[ 4] ^ din[ 7] ^ din[10] ^ din[13] ^ din[16] ^ din[19] ^ din[ 2]; dout[ 4] = din[ 0] ^ din[ 3] ^ din[ 6] ^ din[ 9] ^ din[12] ^ din[15] ^ din[18] ^ din[ 1]; dout[ 3] = din[19] ^ din[ 5] ^ din[ 8] ^ din[11] ^ din[14] ^ din[17] ^ din[ 0]; dout[ 2] = din[18] ^ din[ 4] ^ din[ 7] ^ din[10] ^ din[13] ^ din[16] ^ din[19] ^ din[ 2]; dout[ 1] = din[17] ^ din[ 3] ^ din[ 6] ^ din[ 9] ^ din[12] ^ din[15] ^ din[18] ^ din[ 1]; dout[ 0] = din[16] ^ din[ 2] ^ din[ 5] ^ din[ 8] ^ din[11] ^ din[14] ^ din[17] ^ din[ 0]; end endcase pn1fn = dout; end endfunction // device specific, assuming lower nibble is lost- assign adc_pn0_data_i_s = (IQSEL == 1) ? adc_data_q : adc_data_i; assign adc_pn0_data_q_s = (IQSEL == 1) ? adc_data_i : adc_data_q; assign adc_pn0_data_q_rev_s = brfn(adc_pn0_data_q_s); assign adc_pn0_data_s = {adc_pn0_data_i_s, adc_pn0_data_q_rev_s[3:0]}; assign adc_pn0_iq_match_s = (adc_pn0_data_i_s[7:0] == adc_pn0_data_q_rev_s[11:4]) ? 1'b1 : 1'b0; assign adc_pn0_data_pn_s = (adc_pn_oos == 1'b1) ? adc_pn0_data_in : adc_pn0_data_pn; always @(posedge adc_clk) begin adc_pn0_valid <= adc_valid; adc_pn0_data <= (adc_pn0_iq_match_s == 1'b0) ? 16'hdead : adc_pn0_data_s; adc_pn0_valid_in <= adc_pn0_valid; if (adc_pn0_valid == 1'b1) begin adc_pn0_data_in <= adc_pn0_data; adc_pn0_data_pn <= pn0fn(adc_pn0_data_pn_s); end end // standard, runs on 24bit assign adc_pn1_valid_s = adc_pn1_valid_t & adc_valid; assign adc_pn1_data_pn_s = (adc_pn_oos == 1'b1) ? adc_pn1_data_in : adc_pn1_data_pn; always @(posedge adc_clk) begin if (adc_valid == 1'b1) begin adc_pn1_valid_t <= ~adc_pn1_valid_t; adc_pn1_data_d <= adc_data_i; end adc_pn1_valid_in <= adc_pn1_valid_s; if (adc_pn1_valid_s == 1'b1) begin adc_pn1_data_in <= {adc_pn1_data_d, adc_data_i}; adc_pn1_data_pn <= pn1fn(adc_pn1_data_pn_s); end end // pn mux always @(posedge adc_clk) begin if (adc_pnseq_sel == 4'h9) begin adc_pn_valid_in <= adc_pn1_valid_in; adc_pn_data_in <= adc_pn1_data_in; adc_pn_data_pn <= adc_pn1_data_pn; end else begin adc_pn_valid_in <= adc_pn0_valid_in; adc_pn_data_in <= {adc_pn0_data_in[7:0], adc_pn0_data_in}; adc_pn_data_pn <= {adc_pn0_data_pn[7:0], adc_pn0_data_pn}; end end // pn oos & pn err ad_pnmon #(.DATA_WIDTH(24)) i_pnmon ( .adc_clk (adc_clk), .adc_valid_in (adc_pn_valid_in), .adc_data_in (adc_pn_data_in), .adc_data_pn (adc_pn_data_pn), .adc_pn_oos (adc_pn_oos), .adc_pn_err (adc_pn_err)); endmodule // *************************************************************************** // ***************************************************************************